Species point records from 1991 MNCR Lune Deep sublittoral survey

The sublittoral hard substrata between Morecambe Bay and Whitehaven was surveyed in 1991 as part of the survey of the north-eastern coast of the Irish Sea for the MNCR. This part of the coast is predominantly sedimentary both in the littoral and sublittoral. The coastline south of Whitehaven to the Isle of Walney is generally linear except for the indentations of the Ravenglass and Duddon estuaries. The Isle of Walney is a barrier island which protects the sheltered waters of the Walney Channel to the east. The extensive sand flats of Morecambe Bay are cut by the Lune Deep which stretches south-westwards from the entrance of the Wyre Channel. Only isolated areas of hard substrata are present in the sublittoral. The most extensive area is the Lune Deep, a glacially formed kettle hole with steep boulder and cobble sides. Smaller areas of rock are present at St Bees Head, where there is outcropping bedrock. More characteristic of the region are the glacial boulder scars found littorally and sublittorally along the open coast and in the Walney Channel. Eighteen sublittoral sites were surveyed on the hard substrata. Seven hard substrata communities were identified from four seperate survey areas: St Bees Head with its exposed sand scoured communities; the rich flora and fauna of an exposed boulder scar at Selker Rocks; the sheltered tide swept scar at Head Scar in the Walney Channel, and the dense hydroid and bryozoan turf in the Lune Deep. Three sediment communities associated with these regions are briefly described. Two hundred and six taxa were identified from the surveys.

1991年，作为对爱尔兰海东北海岸线MNCR调查的一部分，对莫克姆湾与怀特黑文之间的海底坚硬底质进行了勘查。该海岸区域在沿岸及海底均以沉积岩为主。怀特黑文至沃尔尼岛一线的沿岸线大致呈线性，除了拉文拉斯和达顿河口的凹地。沃尔尼岛为一道屏障岛，它保护着沃尔尼海峡东部的隐蔽水域。莫克姆湾广阔的沙滩由卢恩深海切割，卢恩深海自威雷海峡入口向西南延伸。在海底仅存在孤立区域的坚硬底质。其中最广泛的区域是卢恩深海，这是一个由冰川形成的壶穴，其陡峭的巨石和砾石侧面清晰可见。在圣比斯角，存在岩石露头，较小区域的岩石分布于此。该区域更具特征的是沿岸和海底开阔海岸以及沃尔尼海峡中发现的冰川巨石疤痕。在坚硬底质上共调查了十八个海底地点。从四个不同的调查区域中识别出了七个坚硬底质群落：圣比斯角及其裸露的沙滩冲刷群落；塞尔克岩石上丰富的植物群和动物群；沃尔尼海峡中头疤痕处的隐蔽潮汐冲刷疤痕；以及卢恩深海中的密集水螅和苔藓群落。与这些区域相关的三种沉积群落简要描述。调查中共识别出206个物种。